Filament Storage Spools Raiser

This model goes hand-in-hand with another I've designed, the Hygrometer Mount for Filament Box.I want to put some silica gel inside an air-tight box for long-term storage of filaments after opening, so I designed these to raise the spools a couple of centimetres so that silica gel beads don't get in direct contact with the filament or the spools.I designed these to print using the least amount of plastic possible, inexpensive and easy to assemble. The design leverages two pieces of 20mm PVC tubing, then you can use one guide element per spool, using one or two spacers to separate the guides to accommodate the spools. The system can be extended for multiple spools. My boxes can hold up to 4 spools, thus my assembly uses 4 guides and 4 to 6 spacers. Have a look at the pictures for an example of assembly.Version 2I've updated the design to include a hole for a short 3mm self-tapping screw: you can now use 4 screws to prevent the PVC tubes from sliding on the guides after assem